[INFO] updating cached repository https://github.com/bushidocodes/rust-collections
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8699765e0431289be838207a179ba8f5cd7b9a34
[INFO] checking bushidocodes/rust-collections against master#1557fb031b272b4c5bfcc7de5df7eddc7b36a584 for pr-73166
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbushidocodes%2Frust-collections" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bushidocodes/rust-collections on toolchain 1557fb031b272b4c5bfcc7de5df7eddc7b36a584
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bushidocodes/rust-collections
[INFO] finished tweaking git repo https://github.com/bushidocodes/rust-collections
[INFO] tweaked toml for git repo https://github.com/bushidocodes/rust-collections written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/bushidocodes/rust-collections already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15f787a8c562b3f3ba2b233777bbc99a5c2481cad10fbe279fa67268a1c8099c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "15f787a8c562b3f3ba2b233777bbc99a5c2481cad10fbe279fa67268a1c8099c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15f787a8c562b3f3ba2b233777bbc99a5c2481cad10fbe279fa67268a1c8099c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15f787a8c562b3f3ba2b233777bbc99a5c2481cad10fbe279fa67268a1c8099c", kill_on_drop: false }`
[INFO] [stdout] 15f787a8c562b3f3ba2b233777bbc99a5c2481cad10fbe279fa67268a1c8099c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+1557fb031b272b4c5bfcc7de5df7eddc7b36a584" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 925b1d81f08a671440d45cb1fc44ace521b494c3c8bc38b5d91114c90a229582
[INFO] running `Command { std: "docker" "start" "-a" "925b1d81f08a671440d45cb1fc44ace521b494c3c8bc38b5d91114c90a229582", kill_on_drop: false }`
[INFO] [stderr]     Checking collections v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `username`
[INFO] [stdout]   --> src/main.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |         username: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `email`
[INFO] [stdout]   --> src/main.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         email: String,
[INFO] [stdout]    |         ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `sign_in_count`
[INFO] [stdout]   --> src/main.rs:62:9
[INFO] [stdout]    |
[INFO] [stdout] 62 |         sign_in_count: u64,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `active`
[INFO] [stdout]   --> src/main.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         active: bool,
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `DPad`
[INFO] [stdout]   --> src/main.rs:77:10
[INFO] [stdout]    |
[INFO] [stdout] 77 |     enum DPad {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Message`
[INFO] [stdout]   --> src/main.rs:94:10
[INFO] [stdout]    |
[INFO] [stdout] 94 |     enum Message {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.33s
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "925b1d81f08a671440d45cb1fc44ace521b494c3c8bc38b5d91114c90a229582", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "925b1d81f08a671440d45cb1fc44ace521b494c3c8bc38b5d91114c90a229582", kill_on_drop: false }`
[INFO] [stdout] 925b1d81f08a671440d45cb1fc44ace521b494c3c8bc38b5d91114c90a229582